2023 SRD Shopify - Flipbook - Page 120
Alternators
Which alternator do you have?
There are 4 GM alternators commonly installed today; the externally regulated alternator used on most GM vehicles from
1963 to 1974, the “SI” series alternator with internal regulator used on almost all GM vehicles from 1969 to 1985, the CS
130/144 series alternator with internal regulator used on GM vehicles from 1986 until 1999, and finally the CS 130 D (which
has an internal cooling fan) from 1994. Check yours against the pictures so you can order the correct connectors.
1963-1974 External Regulator
1969-1985 “SI”
1994-Beyond “CS130-D”
1986-1999
“CS130”
“CS144”
116
The newest alternator to appear on GM vehicles has a new plug but the most
noticeable difference is that the fan is now located inside the alternator body.
